Double cooling fan for automobiles or the like



v T. B. MARTIN DOUBLE COOLING FAN FOR AUTOMOBILES OR THE LIKE May 29, 1928. 1,671,373

Filed OCL. 24, 1927 www , ly extending double flanges 2, extendingv Patented May 29, 1928. y

UNITED 'STATES THOMAS E. MARTIN, OE EELI., CALIFORNIA.

DOUBLE COOLING EAN FOR AUTOMOBILES' on THE LIKE. f

Application'led October v24:, 1927. Serial No.` 228,296.

This invention relates to internal combustion motors, and more especially to a fan for cooling such motors.

An object of the invention is to provide a fan adapted not only` todraw air through theradiator, but to draw it away from the motor toward the radiator.. i A Another object is the provision of a lfan for an automobilemotor, which will direct the air circulated thereby away from the body of the automobile instead of towards it as` 4does the ordinary` type of automobile motor fan. f

Another object is the provision of a fan of the above described nature, adapted to be readily secured to the fan pulley of any ordinary motor, in the place of the fan regularly supplied therewith.

With the foregoing and other objects in view which will be made manifest in the following detailedv description and specifically pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention, wherein:

' Figure 1 is a perspective view of the fan of my invention, and its associated hood in position for use between the radiator and motor of an automobile.

Fig. 2 is an elevation of the fan and hood of Figure 1.

Fig. 3 is a bottom view of the fan and hood of Figure 2. p

Fig. 4 is a perspective view of the base of my improved fan having one of the double blades secured thereto.

Fig. 5 is a perspective view of a. portion of a modification of the fan'base.

One form of the fan of my invention comprises a base 1, having a plurality of radialfrom the edge thereof at regular .spaced intervals from each other. The base is further provided with a plurality of apertures 3, through which bolts may be inserted to secure the base to a fan pulley 4 mounted for rotary movement upon the front end of a motor 6, and driven through the belt 7 from a pulley 8 on the crank shaft of the motor 6. A double blade 11, preferably of U-shaped or'channel cross section, is adapted to be rigidly mounted upon each of the' double fianges 2, with the Open side thereof leading when the fan is rotated.

his feet.

l IA` substantiallyf U-shaped hood 12 is 55 mounted stationary above thel fan, and the hood 12 isolosed at the.y top, and has its ends 13 extending downwards. Aflange 14 is provided upon the edge of the hood y12,

and a plurality` of ears 16 on the forward 60 edge of the hood 12, provide ready means lof attaching the hood 12 yto the radiator 17.

It is understood however, that the hood wouldbe equally effective, were it mounted by afsystem of brackets directly upon the motor :6;V the only requirement being that sufficient clearance be left between the hood 12 and the ends of the fan blades 11, so that rotation of thesame is not interferred with.

It will be understood from the structure thus described, that when the fan blades 11 are rotated, they will pick up air at their inner ends. `This air will be drawn both through the radiator 17 to cool the water therein, and from the motor 6. The air will be caught in the channels of the rapidly rotating blades lland thrown outwards by centrifugal force. When the airis discharged from the outer ends ofthe blades 11,

its path is directed downwards away from the motor 6, by the flanged hood 12. -This hood 12 being open at the bottom, permits the escape of the air under themotor 6.

It will thus be seen that the warm air drawn from the radiator 17 andthe motor 85 G, will not be directed back toward, and into the drivers compartment of the automobile as is ordinarily the case. In stead, it will be thrown out beneath the automobile,

with the result that the driver will not be bothered by excessive heat circulating around It is also readily understood that 'my novel type of fan blade handles so much more air than that of the conventional type of fan, that the desired results may be obtained and still not interfere with'the normal cooling of the radiator 17 and the motor 6. i

In'Figure 5 is showny a fan base 18 of a modification of the fan of my invention. It

isprovided with apair of flanges 20 in angular relationship to each other, so that ar fan blade of V-shaped cross section may be utilized instead of one of U-shaped cross section as in the first described embodiment. 4105 It will be understood that various changes in the details of construction may be made without departing from the spirit or scope of theinvention as defined by the appended a flanged hood adjacent said fan for directing the air circulated thereby, away from the motor, and means forrotating said fan,

2. A fan for an internal combustion motor having a driven fan pulley, said fan yoomprising a'base adapted to be mounted for rotation 1with said pulley, a plurality of radially extending flanges Carried by ASaid base, a ohannelsshaped fan blade secured to` each of said anges, and a stationary hood mounted above said fan, closed at the top handhaving its ends extending downwards,

3. A fan for an internal combustion motor v having a driven fan pulley,y said fancomp'risingr a base adapted to be mounted for rot-ation 'with said pulley, plurality vof radially extending flanges carried by said base, a channel-shaped fan blade secured to each of said flanges, a stationary hood mounted above. said an, said hood being 4. A fan for an internal combustion motor having a driven fan pulley and a radiator,

said 'fancomprising a base adapted to be mounted for rotationv with said pulley adjacent the radiatona plurality o'f radially ex` tending` flanges carried bysaid base, a channel`sha-ped fan blade secured to each of Said flanges, a hood mounted upon said radiator, said hood being elosed at the top andy having its ends extending downwards, and allange on vsaid hood` for directing the output of said fan away from the motor.

In testimony whereof yI have signed my name to this specification. l

v THOMAS B. MARTIN. 

